The collective noun is a bubble of scuba divers.
Many people use a SCUBA suit for diving. Sport divers, police divers and some Navy recovery divers.
scuba divers
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
They swim
seebees
Scuba Divers use a Sonar to find treasure or a hidden ship.
In the Water....
Many scuba stores sell scuba diving cameras. Check a scuba gear stores in your area. This will allow you to compare cameras and get advise from fellow scuba divers.
Scuba - self contained underwater breathing apparatus
Scuba Bob's Ocean Quest - 2006 Fearless Divers Scuba Rangers 2-7 was released on: USA: 2007
Scuba regulators, also called 'diving regulators', are vital for scuba divers to properly obtain oxygen from a tank. Regulators are available for purchase through diving specialty stores such as Prime Scuba, House of Scuba, and Divers Direct.